From f06aa8058b7e32ba32d4551074b6e0b8a300f751 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Mon, 21 Oct 2013 15:02:40 -0400
Subject: [PATCH] Bump version after security fix

---
 program/include/rcube_cache.php |   75 ++++++++++++++++++++++++++-----------
 1 files changed, 53 insertions(+), 22 deletions(-)

diff --git a/program/include/rcube_cache.php b/program/include/rcube_cache.php
index 204eaa5..299e655 100644
--- a/program/include/rcube_cache.php
+++ b/program/include/rcube_cache.php
@@ -7,7 +7,10 @@
  | This file is part of the Roundcube Webmail client                     |
  | Copyright (C) 2011, The Roundcube Dev Team                            |
  | Copyright (C) 2011, Kolab Systems AG                                  |
- | Licensed under the GNU GPL                                            |
+ |                                                                       |
+ | Licensed under the GNU General Public License version 3 or            |
+ | any later version with exceptions for skins & plugins.                |
+ | See the README file for a full license statement.                     |
  |                                                                       |
  | PURPOSE:                                                              |
  |   Caching engine                                                      |
@@ -28,7 +31,7 @@
  * @package    Cache
  * @author     Thomas Bruederli <roundcube@gmail.com>
  * @author     Aleksander Machniak <alec@alec.pl>
- * @version    1.0
+ * @version    1.1
  */
 class rcube_cache
 {
@@ -188,6 +191,24 @@
 
 
     /**
+     * Remove cache records older than ttl
+     */
+    function expunge()
+    {
+        if ($this->type == 'db' && $this->db) {
+            $this->db->query(
+                "DELETE FROM ".get_table_name('cache').
+                " WHERE user_id = ?".
+                " AND cache_key LIKE ?".
+                " AND " . $this->db->unixtimestamp('created')." < ?",
+                $this->userid,
+                $this->prefix.'.%',
+                time() - $this->ttl);
+        }
+    }
+
+
+    /**
      * Writes the cache back to the DB.
      */
     function close()
@@ -227,26 +248,30 @@
             return null;
         }
 
-        if ($this->type == 'memcache') {
-            $data = $this->db->get($this->ckey($key));
-        }
-        else if ($this->type == 'apc') {
-            $data = apc_fetch($this->ckey($key));
-	    }
-
-        if ($data) {
-            $md5sum = md5($data);
-            $data   = $this->packed ? unserialize($data) : $data;
-
-            if ($nostore) {
-                return $data;
+        if ($this->type != 'db') {
+            if ($this->type == 'memcache') {
+                $data = $this->db->get($this->ckey($key));
             }
+            else if ($this->type == 'apc') {
+                $data = apc_fetch($this->ckey($key));
+	        }
 
-            $this->cache_sums[$key] = $md5sum;
-            $this->cache[$key]      = $data;
+            if ($data) {
+                $md5sum = md5($data);
+                $data   = $this->packed ? unserialize($data) : $data;
+
+                if ($nostore) {
+                    return $data;
+                }
+
+                $this->cache_sums[$key] = $md5sum;
+                $this->cache[$key]      = $data;
+            }
+            else {
+                $this->cache[$key] = null;
+            }
         }
-
-        if ($this->type == 'db') {
+        else {
             $sql_result = $this->db->limitquery(
                 "SELECT cache_id, data, cache_key".
                 " FROM ".get_table_name('cache').
@@ -271,6 +296,9 @@
                 $this->cache[$key]      = $data;
 	            $this->cache_sums[$key] = $md5sum;
                 $this->cache_keys[$key] = $sql_arr['cache_id'];
+            }
+            else {
+                $this->cache[$key] = null;
             }
         }
 
@@ -436,10 +464,13 @@
      */
     private function delete_record($key, $index=true)
     {
-        if ($this->type == 'memcache')
-            $this->db->delete($this->ckey($key));
-        else
+        if ($this->type == 'memcache') {
+            // #1488592: use 2nd argument
+            $this->db->delete($this->ckey($key), 0);
+        }
+        else {
             apc_delete($this->ckey($key));
+        }
 
         if ($index) {
             if (($idx = array_search($key, $this->index)) !== false) {

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